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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI][HSW] igt@kms_busy@extended-modeset-hang-oldfb-with-reset-render-B dmesg-warn: Unclaimed read from register 0x70008"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102692">102692</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[CI][HSW] igt@kms_busy@extended-modeset-hang-oldfb-with-reset-render-B dmesg-warn: Unclaimed read from register 0x70008
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>DRI git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>marta.lofstedt@intel.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Starting at CI_DRM_3078 and so far on the 3 consecutive runs on the HSW-shards
igt@kms_busy@extended-modeset-hang-oldfb-with-reset-render-B
[ 140.395197] Setting dangerous option reset - tainting kernel
[ 140.395459] Setting dangerous option reset - tainting kernel
[ 140.395661] Setting dangerous option force_reset_modeset_test - tainting
kernel
[ 155.791677] i915 0000:00:02.0: Resetting chip after gpu hang
[ 155.793296] Unclaimed read from register 0x70008
[ 155.793346] ------------[ cut here ]------------
[ 155.793372] WARNING: CPU: 1 PID: 1575 at
drivers/gpu/drm/i915/intel_uncore.c:843 __unclaimed_reg_debug+0x47/0x60 [i915]
[ 155.793375] Modules linked in: vgem snd_hda_codec_hdmi i915
x86_pkg_temp_thermal snd_hda_codec_realtek intel_powerclamp
snd_hda_codec_generic coretemp snd_hda_intel crct10dif_pclmul snd_hda_codec
crc32_pclmul snd_hwdep ghash_clmulni_intel snd_hda_core r8169 mii snd_pcm
mei_me lpc_ich mei prime_numbers
[ 155.793424] CPU: 1 PID: 1575 Comm: kworker/1:4 Tainted: G U
4.13.0-CI-CI_DRM_3078+ #1
[ 155.793427] Hardware name: MSI MS-7924/Z97M-G43(MS-7924), BIOS V1.12
02/15/2016
[ 155.793451] Workqueue: events_long i915_hangcheck_elapsed [i915]
[ 155.793456] task: ffff88040293a800 task.stack: ffffc90001318000
[ 155.793481] RIP: 0010:__unclaimed_reg_debug+0x47/0x60 [i915]
[ 155.793483] RSP: 0018:ffffc9000131b9d8 EFLAGS: 00010096
[ 155.793488] RAX: 0000000000000024 RBX: 0000000000000000 RCX:
0000000000000002
[ 155.793490] RDX: 0000000080000002 RSI: ffffffff81ca0ea3 RDI:
00000000ffffffff
[ 155.793492] RBP: ffffc9000131b9f0 R08: 0000000000000000 R09:
0000000000000001
[ 155.793495] R10: ffffc9000131b968 R11: 000000008369f3ac R12:
0000000000070008
[ 155.793497] R13: 0000000000000001 R14: 0000000000000000 R15:
ffff8803f96d0ba8
[ 155.793499] FS: 0000000000000000(0000) GS:ffff88041fa40000(0000)
knlGS:0000000000000000
[ 155.793501] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 155.793504] CR2: 00007faae2356000 CR3: 0000000003e0f000 CR4:
00000000001406e0
[ 155.793506] Call Trace:
[ 155.793532] gen6_read32+0x22d/0x2b0 [i915]
[ 155.793557] ? fwtable_read8+0x2c0/0x2c0 [i915]
[ 155.793586] intel_modeset_setup_hw_state+0x6c4/0xdc0 [i915]
[ 155.793615] __intel_display_resume+0x1f/0xc0 [i915]
[ 155.793642] intel_finish_reset+0xff/0x170 [i915]
[ 155.793661] i915_reset_device+0x205/0x260 [i915]
[ 155.793681] ? gen8_gt_irq_ack+0x170/0x170 [i915]
[ 155.793687] ? work_on_cpu_safe+0x60/0x60
[ 155.793709] i915_handle_error+0x2d8/0x430 [i915]
[ 155.793716] ? vsnprintf+0xd1/0x4b0
[ 155.793721] ? scnprintf+0x3a/0x70
[ 155.793748] hangcheck_declare_hang+0xd3/0xf0 [i915]
[ 155.793769] ? intel_runtime_pm_put+0x56/0xa0 [i915]
[ 155.793796] i915_hangcheck_elapsed+0x262/0x2d0 [i915]
[ 155.793803] process_one_work+0x224/0x650
[ 155.793809] worker_thread+0x4e/0x3b0
[ 155.793815] kthread+0x114/0x150
[ 155.793818] ? process_one_work+0x650/0x650
[ 155.793820] ? kthread_create_on_node+0x40/0x40
[ 155.793825] ret_from_fork+0x27/0x40
[ 155.793833] Code: 01 75 31 84 db 75 2d 45 84 ed 48 c7 c0 e1 2d 2e a0 48 c7
c6 d7 2d 2e a0 48 0f 44 f0 44 89 e2 48 c7 c7 ea 2d 2e a0 e8 ca 99 ec e0 <0f> ff
83 2d 04 fb 0f 00 01 5b 41 5c 41 5d 5d c3 66 0f 1f 84 00
[ 155.793957] ---[ end trace 0063b64b25b2c295 ]---
Full data:
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3078/shard-hsw3/igt@kms_busy@extended-modeset-hang-oldfb-with-reset-render-B.html">https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3078/shard-hsw3/igt@kms_busy@extended-modeset-hang-oldfb-with-reset-render-B.html</a></pre>
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